Book Image

Modern DevOps Practices

By : Gaurav Agarwal
Book Image

Modern DevOps Practices

By: Gaurav Agarwal

Overview of this book

Containers have entirely changed how developers and end-users see applications as a whole. With this book, you'll learn all about containers, their architecture and benefits, and how to implement them within your development lifecycle. You'll discover how you can transition from the traditional world of virtual machines and adopt modern ways of using DevOps to ship a package of software continuously. Starting with a quick refresher on the core concepts of containers, you'll move on to study the architectural concepts to implement modern ways of application development. You'll cover topics around Docker, Kubernetes, Ansible, Terraform, Packer, and other similar tools that will help you to build a base. As you advance, the book covers the core elements of cloud integration (AWS ECS, GKE, and other CaaS services), continuous integration, and continuous delivery (GitHub actions, Jenkins, and Spinnaker) to help you understand the essence of container management and delivery. The later sections of the book will take you through container pipeline security and GitOps (Flux CD and Terraform). By the end of this DevOps book, you'll have learned best practices for automating your development lifecycle and making the most of containers, infrastructure automation, and CaaS, and be ready to develop applications using modern tools and techniques.
Table of Contents (19 chapters)
1
Section 1: Container Fundamentals and Best Practices
7
Section 2: Delivering Containers
15
Section 3: Modern DevOps with GitOps

Questions

  1. You should use Overlay2 for CentOS and RHEL 7 and below – True or false?
  2. Which of the following statements are true? (Multiple answers are possible)

    a. Volumes increase IOps.

    b. Volumes decrease IOps.

    c. tmpfs mounts use system memory.

    d. You can use bind mounts to mount host files to containers.

    e. You can use volume mounts for multi-instance active-active configuration.

  3. Changing the storage driver removes existing containers from the host – True or false?
  4. devicemapper is a better option than overlay2 for write-intensive containers – True or false?
  5. Which one of the following logging drivers are supported by Docker? (Multiple answers are possible)

    a. journald

    b. Splunk

    c. JSON files

    d. Syslog

    e. Logstash

  6. Docker Compose is an imperative approach for managing containers – True or false?
  7. Which of the following docker run configurations are correct? (Multiple answers are possible)

    a. docker run nginx

    b. docker run --name nginx nginx...